Are prisoners gassed?

Pyongyang

Human-rights activists said this week that they had evidence to support long-standing allegations that North Korea has tested chemical weapons on humans. Documents smuggled into South Korea are said to be transfer orders to move inmates from a prison camp to a chemical complex for “the purpose of human experimentation for liquid gas.” Experts in South Korea, including defectors from the North, are divided on the documents’ authenticity. Kang Byong Sop, the North Korean chemical worker who stole the documents, was arrested last month in China, as he tried to flee to Laos; his whereabouts are unknown.